Tribotronic control of friction in oil-based lubricants with ionic liquid additives

QC 20161014
Atomic force microscopy (AFM) reveals that tribotronic control of friction using an external potential applied to a gold surface is possible for ionic liquid (IL) concentrations as low as 5 mol% in hexadecane. The IL used is trihexyl(tetradecyl) phosphonium bis(2,4,4-trimethylpentyl)phosphinate, in which both the cation and anion have surfactant-like structures, and is miscible with hexadecane in all proportions. For IL concentrations less than 5 mol% friction does not vary with applied potential, but for 5 mol% and above changing the potential changes the composition of the IL boundary layer from cation-enriched (negative potentials) to anion-enriched (positive potentials). As the lubricities of the cation-rich and anion-rich boundary layers differ, this enables active control of friction in oil-based lubricants.

Li, H.University of Newcastle, Australia (author)
Rutland, Mark W.RISE,KTH,Yt- och korrosionsvetenskap,Life Science,KTH Royal Institute of Technology, Sweden(Swepub:ri)MarkRu@ri.se (author)
Webber, G. B.University of Newcastle, Australia (author)
Atkin, R.University of Newcastle, Australia (author)
University of Newcastle, AustraliaYt- och korrosionsvetenskap (creator_code:org_t)

In:Physical Chemistry, Chemical Physics - PCCP: Royal Society of Chemistry (RSC)18:34, s. 23657-236621463-90761463-9084

By the author/editor: Cooper, P. K.; Li, H.; Rutland, Mark W.; Webber, G. B.; Atkin, R.

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Physical Chemist ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Tribology

Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.